Abstract High-field nonlinear dielectric and piezoelectric properties of Fe2O3 doped PMnS-PZN-PZT high-power piezoelectric ceramics are investigated. Rayleigh analysis reveals the presence of contributions from lossless reversible domain wall motion and the associated decoupling of nonlinearity and losses. This behavior is attributed to the orderly distribution of defect pinning centers. With the increase in temperature, the high-field nonlinearity becomes more pronounced. It is suggested that the depinning of domain walls arising from the randomization of defect pinning centers is responsible for this enhancement of high-field nonlinearity at the elevated temperatures.

中文翻译：

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Fe2O3掺杂PMnS-PZN-PZT陶瓷的高场非线性特性和畴壁运动特性

摘要 研究了Fe2O3掺杂PMnS-PZN-PZT大功率压电陶瓷的高场非线性介电和压电性能。瑞利分析揭示了无损可逆畴壁运动的贡献以及非线性和损失的相关解耦。这种行为归因于缺陷钉扎中心的有序分布。随着温度的升高，高场非线性变得更加明显。这表明由缺陷钉扎中心的随机化引起的畴壁去钉扎是高温下高场非线性增强的原因。